几种杀菌剂对荞麦茎溃疡病菌的生物活性和田间防治效果

郭婷, 刘雨薇, 吴进蓉, 班瑞娟, 岳文冉, 李哲, 王莉花, 张笑宇

Biological Activity and Field Control Effects of Several Fungicides against Buckwheat Stem Canker by Rhizoctonia spp.

Guo Ting, Liu Yuwei, Wu Jinrong, Ban Ruijuan, Yue Wenran, Li Zhe, Wang Lihua, Zhang Xiaoyu

表4 2021年5种杀菌剂的不同浓度对荞麦茎溃疡病的田间防治效果

Table 4 Field control effects of five fungicides with different concentrations against buckwheat stem canker by Rhizoctonia spp. in 2021

药剂 Fungicide	用药量 Dosage (mL/hm²)	病情指数 Disease index	防治效果 Control efficiency (%)	千粒重 1000-seed weight (g)	产量 Yield (kg/hm²)	增产 Increase production (%)
空白对照Blank control		9.3±1.3bc		24.2±0.5a	879.5±22.2cde
接菌对照Inoculation control		30.0±3.9a		22.8±1.5a	696.2±74.1fg
250 g/L嘧菌酯SC Azoxystrobin 250 g/L EC	675.000	9.2±2.5bc	69.50±8.18ab	25.5±2.2a	1016.0±70.8abc	80.73
250 g/L嘧菌酯SC Azoxystrobin 250 g/L EC	765.000	9.4±1.8bc	68.53±6.08ab	26.1±1.0a	1051.7±38.5ab	89.74
	855.000	5.8±0.9bc	80.83±3.10ab	24.7±2.4a	1061.4±30.0a	92.20
250 g/L吡唑·醚菌酯EC Pyraclostrobin 250 g/L EC	480.000	11.1±3.7bc	62.97±12.30ab	25.7±0.6a	794.0±47.4defg	24.69
250 g/L吡唑·醚菌酯EC Pyraclostrobin 250 g/L EC	570.000	9.6±2.3bc	79.17±6.89ab	26.8±3.2a	1046.6±73.4ab	88.45
	765.000	6.1±2.1bc	79.60±6.89ab	26.8±1.9a	654.2±57.8g	-10.60
40%氟硅唑EC Flusilazole 40% EC	375.000	4.6±0.9c	84.73±3.12a	26.3±2.2a	936.6±44.6abcd	60.70
40%氟硅唑EC Flusilazole 40% EC	480.000	7.0±0.9bc	76.67±3.08ab	27.6±2.9a	702.5±49.1fg	1.59
	675.000	8.0±1.8bc	73.20±5.85ab	28.7±3.3a	705.8±37.5fg	2.42
50%氟啶胺SC Fluazinam 50% SC	375.000	11.0±2.2bc	63.47±5.85ab	28.3±2.2a	818.1±61.8defg	30.78
50%氟啶胺SC Fluazinam 50% SC	480.000	7.0±2.2bc	76.80±7.20ab	27.7±2.9a	890.7±59.5bcde	49.11
	675.000	12.1±2.5b	59.60±8.43b	28.2±2.8a	824.0±25.4defg	32.26
42.4%唑醚·氟酰胺SC Flutolanil 42.4% SC	375.000	10.9±1.5bc	63.60±4.97ab	28.8±3.6a	733.1±56.6efg	9.31
42.4%唑醚·氟酰胺SC Flutolanil 42.4% SC	480.000	5.8±1.0bc	80.63±3.25ab	28.3±2.7a	662.4±29.9g	-8.52
	675.000	11.0±2.2bc	63.40±7.35ab	26.6±2.2a	840.5±36.6def	36.43